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Finding the Fourth Proportional to 16,954,656.80, 25,431,985.20 and 15,107,079.20

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Solution

The fourth proportional to 16,954,656.80, 25,431,985.20 and 15,107,079.20 is: 22,660,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,954,656.80 : 25,431,985.20 = 15,107,079.20 : x
  2. Step 2: Convert to fraction form
    16,954,656.80/25,431,985.20 = 15,107,079.20/x
  3. Step 3: Cross multiply
    16,954,656.80x = 25,431,985.20 × 15,107,079.20
  4. Step 4: Simplify right side
    16,954,656.80x = 384,203,014,629,627.81
  5. Step 5: Solve for x
    x = 384,203,014,629,627.81/16,954,656.80
  6. Step 6: Final answer
    x = 22,660,618.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.